Centrifugal filter.



No. 358,288. w-TENTED am; E. s. L www,

GENTMFUGL Fia-T APPLIGATIGH FILED w03.

/r innen is? ma v iff 4 0 l may be drivenbymeans of any 'well known or suit- UNITED STATES y.iifaliTisNT OFFICE.

'FRANS OSKAR NILssoN AND Jonny AXEL ronfsoN, OF STOCKHOLM, SWEDEN, AssIGNoRs To AKTIEBOLAGET.YINOENTRIFUGEN, or STOCKHOLM, SWEDEN..

CENTRIFUGAL FILTER.

No. ceases.

Specification 'of Letters Patent.

Patented oet. 15,1907.

Application nea April 2.o, 190e. seran No. 312,836.

and residents of Stockholm, Sweden, have'invented a new and useful Improvement in Apparatus for Improving the Quality of Liquids,- ofwhich the following is a specification, reference being had to'l the ldrawing It is well known to lsubject wine, beer, and the like,

', them Vin a centrifugal apparatus'or in a xed vessel accompanying and forming a' part hereof. y1

'Thisrinvention relates to a centrifugallapparatus for improving thequality of wine and the like.

to the action ofthe centrifugal force in a centrifugal apparatus and thereupon to leadV the liquid through a.

filter provided in the apparatus for removing the solid particles from the liquid. Itis further'well known to .improve the quality'of the said liquids by .subjecting having a rotating stirring device to a churning action.

' The object of the' present invention is to provide an apparatus by 'which a preliminary treating of wine or the like can be obtained before the 'same' is sub-` jected to ilteringaction bymeans of a centrifugal filter, and the invention consists, chiey, the combination of a bowl, a centrally arranged liner having perforated wings at the inside thereof, and a filter sur- .rounding the said liner, said filter communicating with the said liner in such a manner that the liquid enter# the'apparatus is .causedto first 4runthrough the liner, in the longitudinal direction thereof, and then through the filter, suitably in a radial direction.

- In order to make the invention more easily under-v stoodv we will hereinafter more particularly' describe -the ,sa me with reference to the accompanying drawk ing illustrating one form of our improved apparatus,

Figure) shows a vertical section of the apparatus,

andfFig. 2 shows a plan-view of the same, the cover bgipg removed. f

Y, Referring to the drawing, the apparatus consists of a bowl ofsubstantially the same shape as the bowl of a-usualrnilk centrifugal separator. The saidbowl 1 able driving-device. The top of the bowl l is closed by an outer 'cover 2, `and through a`n opening inthe top of the latterpasses a centrall inlet-pipe 3 which suitablynlay beintegral withA an inner cover 4 provided with openings 5 for the liquid., Below the said -cover 4 is in the bowl provided a centrally located cylinder 6 having a number of, suitably, radial wings '7- extending from the wall of the said cylinder towards the center of the latter.

Closebelow the lower mouth of the central inlet-pipe 3 is provided aspreading-disk 8 for spreading the liquid admittedthrough the'inlet-pipe 3 and for leading the same towards the wings 7. The latter are provided with perforations of suitable shape and size, so that the wings" workas stirrers or 'churners for the 'liquid. The'said central cylinder 6 is at the lowerendconnected to or made integral with an intermediate bottom 9 which by means of flanges 10u placed radially or in any other suit- 'able manner is held at a distance abovethebottom of the bowl so as to form between the said bottoms a pas' sage forvthe liquid from the in terior of the said central 7 cylinder 6 to thequter parts of the interior of the bowl l.

At a'. distance from the cylindrical wall of the bowl is provided a perforated cylinder 11 and outside the central cylinder 6 and at a distance from the same is pro-- vided another perforated cylinder 12. The annular space formed between the said perforated cylinders '11 and .12 contains a'suitable ltering material 13, such as eXcelsior, through which the liquid passes radially or substantially radially towards the center. Between the cylinders 6 land 12 is an annular space in the upper part of'which is provided a flange 15 having perforations 14 and extending from the cylinder 12, the said annular. space thus communicating with the space above the cover 4 by the said perforations 12 and the openings 5 in the cover 4. The coverv 2 is provided with outlet-pipes 16 for the liquid. Belowthe inner cover 4 is placed a vinlet-pipe 3 after the bowl has been put in rotation and isrkept rotating 4at suitable speed, and falls down onto the s preadingdisk 8, distributing the liquid towards the wings 7 and to the inner side of the cylinder 6. The

liquid is now caught by the said -lwings which on account of their perforations subject the liquid toa violent l working as in churning. The said process may be continued also in the space between the bottom 9 and the bottom of .the bowl if the wings or flanges 10 have a shape suitable for the said purpose. In as much as the lliquid while being treated flows towards the periphery of the bowl it will be subjected to an increased separan ing process which in the space between the cylindrical wall of the bowlV 1 and thecylinder 11 results in'that solidor slimy-particles contained' in the liquidare deposited on the inside of the cylindrical wall of the bowl.

The liquid thereupon passes vtowards the center throughthe filtering material between the cylinders 11 and 12.

The movement lthrpugh the said material causes a. fur-l therworking ofthe liquid, -and at the same time small solid particles which have not been removed bytheforegoing centrifugal process, will be retained by the filtering material, the latter coacting in this respect with the-,centrifugal force. -iAfter the liquid has'passed the filtering material it arrives through thepe'rforations of the cylinder 12 into the space between the latter and the central cylinder, and from the said /space the liq-` uid Hows through the perforatons 14 and the openings 5 into thelspace between the covers 4 and 2 and leaves the apparatus through the outletpipes 16.

Having now described 'our invention whatwe claim as new and desire' to secure by' Letters latent is:

1. In a centrifugal apparatus for improvingliquids the Y,

combination of a howl, a centrally arranged liner having: perforated wing's at .the insidevjthereof, and o. filter surrounding the said liner, said filter communicating with the said linerYin such a manner that the liquid entering the apparatus is caused to first run through the liner, ln'

the longitudinal direction thereof, and then through the said filter, substantially as and for the'purpose set forth.

2, In a centrifugal apparatus for improving liqnids'the combination of a howl, a cylinder arranged centrally witlr,

in the said howl, perforated wings attached to the inside of the said cylinder, and a filter surrounding the :said cylinder, at a distance tlierefroin, said cylinder communieating, atlts lower end, with the outer side of the said tilter, substantially as and for the purpose set forth.

3. ln a centrifugal apparatus forV improving liquids. the

below the said inlet-pipe and communicating therewith,

perforated Wings in the said central cylinder, an intermodiate'hottom in the bowl, ilanges on the underside of the said bottom, a perforated cylinder surrounding the said central cylinder and forming together with the latter yan annular space, another perforated cylinder forming togeth'rvwith the -Iirstmentio'ned perforated cylinder' an annular, space, and a filtering materialtfitg thovlastmen- -tioned annular space, 'substantially as described.

[n testimony whereof We have signed our names to this speciiication in thepresenee" of' two subscribing witnesses.

- FRANS OSK'AR NILSSON.

JOHAN AXEL JGNSON.

. Witnesses:

EVALD l. Unna, KARL RUNCSKOG. 

